Ultra-slow light propagation by self-induced transparency in ruby in the superhyperfine limit

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DOIResolve DOI: http://doi.org/10.1364/OL.42.001871
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TypeArticle
Journal titleOptics Letters
ISSN0146-9592
1539-4794
Volume42
Issue10
Pages18711874
AbstractSelf-induced transparency is reported for circularly polarized light in the R1(−3/2) line of a 30 ppm ruby (3α-Al2O3:Cr3+) at 1.7 K in a magnetic field of B‖c=4.5  T. In such a field and temperature, a 30 ppm ruby is in the so-called superhyperfine limit resulting in a long phase memory time, TM=50  μs, and a thousand-fold slower pulse propagation velocity of ∼300  m/s was observed, compared to the ∼300  km/s measured in the first observation of self-induced transparency (SIT) ∼50 years ago, that employed a ruby with a 500 ppm chromium concentration in zero field and at 4.2 K. To date, this is the slowest pulse propagation ever observed in a SIT experiment.
Publication date
PublisherOptical Society of America
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number23002310
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Record identifier2e568d78-118b-46f2-bc67-0173181406af
Record created2017-10-13
Record modified2017-10-13
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